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Transcript
What is Gold?
By Julia Ugras
What Are Elements?
Definition: An element is a specific
type of atom.
I will be presenting the atomic
structure, history and importance of
Gold.
Shell O
Shell P
Gold’s Atom
Shell K
Electrons
(-)
Shell L
Protons: 79
Neutrons: 119
Nucleus
Shell M
Shell N
What is the
Structure of Gold?
A gold colored metal, has six shells
79 Protons, 79 Electrons and 119
Neutrons
Atomic Weight : 197amu
Atomic Number: 79
Symbol: Au
What is the History of Gold?
No one is attributed to discovering Gold
Believed to be discovered in 3,000 BC
( age of Egyptians)
Is over 5,011 years old
Oldest Gold jewelry is from 700 BC
Why is Gold Important?
Jewelry
Electric Conductors
Dentistry
Decoration
Bowls
Vases
Electronics
Interesting Facts
Two thirds of the Earth’s Gold is found in
South Africa
Two thirds of the United States Gold
supply comes from South Dakota and
Nevada
One ounce of Gold can be beaten down to
300 square feet
Gold can be kept captive inside rocks
Conclusion
I learned lots of interesting information
about Gold
Three main things that interested me
Gold is from the Earth’s crust
Amount of neutrons (119) Gold contains
Gold is over 5,011 years old
Gold is a very interesting and important
element
Works Consulted
"A Periodic Table of the Elements at Los Alamos National Laboratory." Web. 10 Dec.
2010.
“Elements." Chemical Elements.com - An Interactive Periodic Table of the Elements.
Dec. 2010.
Web. 10
"Elements." Current Science. POWER Library. SIRS Discoverer. Web. 10 Dec. 2010.
"It's Elemental - The Periodic Table of Elements." Science Education at Jefferson Lab.
Dec. 2010.
Knapp, Brian J., David Woodroffe, and David A. Hardy. Elements. Danbury, CT: Grolier
Educational, 2000. Print.
"Periodic Table - Chart of All Chemical Elements." Lenntech. Web. 10 Dec. 2010.
“WebElements.” Periodic Table of the Elements. Web. 10 Dec. 2010.
Web. 10